4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. */
9 const Float_t kZTwoDeg = 128.863;
10 // start of the absorber
11 const Float_t kZAbsStart = 90.;
13 const Float_t kZNose = 102.;
14 // end of the 5deg line below the TPC field cage
15 const Float_t kZConeTPC = 285.;
16 // start of concrete absorber
17 const Float_t kZAbsCc = 315.;
19 // max acceptance angle
20 const Float_t kAccMax = 10.*kDegrad;
22 const Float_t kTheta1 = 24.*kDegrad;
23 // angle of second outer cone below field cage
24 const Float_t kTheta2 = 5. *kDegrad;
25 // outer angler of W rear shield
26 const Float_t kThetaR = 3. *kDegrad;
28 // thicknesses defining the absorber
29 // ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
31 const Float_t kDSteel = 1.;
32 // poly-ethylene layer
33 const Float_t kDPoly = 5.0;